期刊
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
卷 26, 期 16, 页码 1229-1235出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09205063.2015.1082807
关键词
polydimethylsiloxane; carbon nanotubes; composite electrode; dispersion; electrocardiography
资金
- Science and Technology Commission of Shanghai Municipality [12411951900, 2014MH031]
Polymer-based flexible electrodes are receiving much attention in medical applications due to their good wearing comfort. The current fabrication methods of such electrodes are not widely applied. In this study, polydimethylsiloxane (PDMS) and conductive additives of carbon nanotubes (CNTs) were employed to fabricate composite electrodes for electrocardiography (ECG). A three-step dispersion process consisting of ultrasonication, stirring, and in situ polymerization was developed to yield homogenous CNTs-PDMS mixtures. The CNTs-PDMS mixtures were used to fabricate CNTs-PDMS composite electrodes by replica technology. The influence of ultrasonication time and CNT concentration on polymer electrode performance was evaluated by impedance and ECG measurements. The signal amplitude of the electrodes prepared using an ultrasonication time of 12h and CNT content of 5wt% was comparable to that of commercial Ag/AgCl electrodes. The polymer electrodes were easily fabricated by conventional manufacturing techniques, indicating a potential advantage of reduced cost for mass production.
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